122421647409 has 16 divisors (see below), whose sum is σ = 173473073280. Its totient is φ = 76528021760.

The previous prime is 122421647371. The next prime is 122421647417. The reversal of 122421647409 is 904746124221.

It is a cyclic number.

It is not a de Polignac number, because 122421647409 - 2¹³ = 122421639217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122421647449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4448037 + ... + 4475474.

It is an arithmetic number, because the mean of its divisors is an integer number (10842067080).

Almost surely, 2^122421647409 is an apocalyptic number.

It is an amenable number.

122421647409 is a deficient number, since it is larger than the sum of its proper divisors (51051425871).

122421647409 is a wasteful number, since it uses less digits than its factorization.

122421647409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923800.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 122421647409 in words is "one hundred twenty-two billion, four hundred twenty-one million, six hundred forty-seven thousand, four hundred nine".